IP Library › Granted Patent US 6,834,108
Granted Patent Utility PCT National Stage
US 6,834,108 · Confirmation No. 8744

METHOD FOR IMPROVING ACOUSTIC NOISE ATTENUATION IN HAND-FREE DEVICES

Inventor: Gerhard Schmidt
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2019-10-08 N570 Communication - Re: Power of Attorney (PTOL-308) 1 View
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2004-06-29 LET. Miscellaneous Incoming Letter 1 View
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2001-01-29 LET. Miscellaneous Incoming Letter 68 View
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Quick Facts
Patent No.
US 6,834,108
App. No.
09/622,270
Filed
2001-01-29
Granted
2004-12-21
Examiner
PHAM, TUAN
Art Unit
2643
PTA
0 days